OMAPL138如何在Linux下使用EDMA3驱动

yyj · 发表于 2018-1-30 11:01:43

本帖最后由 yyj 于 2018-1-30 11:01 编辑

[code]EDMA sample test application9 `3 k' R( @. H0 [$ E
/*
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* edma_test.c6 S" M B+ H% d V& e
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* brief EDMA3 Test Application
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*
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* This file contains EDMA3 Test code.
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE$ z+ G# t5 ]/ W5 Z0 a) g0 Q
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT0 K3 ]# u! l' F! |8 E
* TO CHANGE.
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/& ?; ^/ ^# L- N3 i
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* This program is free software; you can redistribute it and/or0 U+ M6 x- z4 u
* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation version 2.8 @, }5 {5 e( d* m- o, ^
*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any5 c* }" F! g$ g* V6 D. U3 R( c
* kind, whether express or implied; without even the implied warranty% m. h, W& n1 A( a) _! D% Q4 l
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the0 e v. v# n4 f. S8 Z
* GNU General Public License for more details.- @, o+ u* V' w, c! G T. ?
*/, H6 g, T9 [0 |) e# V
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/errno.h>
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#include <linux/types.h> c# V! J& Z) z. r4 U/ k3 l z1 R
#include <linux/interrupt.h> E2 n! l9 K7 g8 W8 H1 ]
#include <asm/io.h>
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#include <linux/moduleparam.h>4 C9 [' [. a8 M; r+ C1 M. S5 d
#include <linux/sysctl.h>! S$ | ^* w/ }; T2 o
#include <linux/mm.h>8 Z; g' l% u1 h
#include <linux/dma-mapping.h>' c& |7 m+ a/ e [) d+ [: R1 w+ N
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#include <mach/memory.h>4 g! ]) o) }! g, p# d6 V
#include <mach/hardware.h>+ c! p7 ~( m+ S: K. v/ Q$ T9 l
#include <mach/irqs.h>
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#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG% @& C- \* q# s( t' ^
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
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#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)5 ~: z& r, C" y# p- d
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else9 K: _" d+ k$ w! L9 ~7 E
#define DMA_PRINTK( x... ), V& ]& A' X3 p; P0 F. h: Q- f" r
#define DMA_FN_IN
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#define DMA_FN_OUT" I, S; s( G9 u
#endif2 }0 M+ ?$ A: u( A7 z& F
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)" t1 v p+ k9 A5 R9 U# t5 \
#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 201 [6 t+ d: i% I' e& _6 C
#define ITCINTEN_SHIFT 214 S% i3 V b+ R$ f, W& ]# k* P
#define TCCHEN_SHIFT 22$ F- X& c/ G+ I6 a. b8 Z
#define ITCCHEN_SHIFT 23" t) K: g6 r: h3 W& \3 I; f
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static volatile int irqraised1 = 0;
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static volatile int irqraised2 = 0;
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);9 i' E% V% M( c+ ]3 Q
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);( C9 b) R0 e1 a6 M
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
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dma_addr_t dmaphyssrc1 = 0;
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dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;1 y$ L7 T8 a8 ?) l0 n6 q
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;( K9 x: S1 p# c1 v$ c
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static int acnt = 512;
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static int bcnt = 8;0 @7 O, I; Y5 L
static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);( V7 ~1 x; W- {% V1 c$ e
module_param(bcnt, int, S_IRUGO);& {* C( h8 G8 O) Q% g: x
module_param(ccnt, int, S_IRUGO);

复制代码

   这是在TI上找到的一个针对Davanci处理器简单的EDMA3驱动程序测试例程的一部分，我在编译的过程中是用
arm-none-linux-gnueabi-gcc  -I /home/tl/omapl138/linux-3.3/arch/arm/include -I /home/tl/omapl138/linux-3.3/include  EDMA3test.cpp -o EDMA3这个命令来链接库文件进行编译，但是报的错误特别多，我又试着一个函数一个函数往进加，仍然是很多错误。
   我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。

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